Active crossovers

Ral, I will.
I'm looking for ss amps with adjustable gain; should make life easier.

KP

Matching two amps is trivial.

There is no matching to be done, other than level setting. Just about every electronic crossover has level adjustments for every band.

Regardless of the "gain" of an amp, when you increase the input by 3dB, the output goes up 3dB. So, all you have to do is to put a level into amp 2 that when compared at the speaker output using pink noise gives the *same* level on your SPL meter as does amp 1. Of course, your ear will be the final arbiter of the precisely perfect relative levels.

If your electronic xover does not have level controls, and your amp does not either, you can either build a fixed pad into a small box - after measuring the dB difference with no pad. Or you can buy an after market in-line adjustable attenuator box to put in line with the amp that is "too loud" to reduce its level. Alternately, you can drill some holes into your amp and put a small rotary switch with MF resistors and make your own attenuator built in,or just put a decent pot there... I do that all the time on Phase Linear 400s that are used as subwoofer amps from time to time (on the front panel of the PL400, to match the PL700).

All done.

_-_-bear

Yes, having an amp with adjustable volume control gains, like the Parasounds (God bless em for doing so!!!), makes live way easier when you biamp!
Hey, also let me know which active crossover you are ending up with ultimately!!! I would like to know for my own references/uses! The only one I can recall having heard implemented is the Krell, and am currious to hear how the Bryston, or others, sounds!

If you use the Krell KBX, it has gain adjustment for each Highs and Lows, making the need for adjustable volume on the amp totally unnecessary. In fact, the less in the signal path the better, so unless I could bypass the amps volume control, I would prefer one without it.

Richard

OK, I posted this in the wrong thread, hehe! Hope I didn't cause too many blank stares!

I asked Albert the best way to bianp the VR's, here's his info:

Hello, again,
for facilitating active biamping of the speakers, does anything need to be
done to the speaker itself?

No. The internal circuitry divides the signal between the two amplifiers, so you don't need to change the speakers or buy an electronic crossover. Just connect the preamp or CD player to both amps with a "Y" connector and interconnects. Just make sure that both amps have a similar input sensitivity, so that they play at the same volume level. The output power has nothing to do with this, we use an 8 watt SET amp on the mid/tweeter unit and a 200 watt solid state amp on the woofers with complete integration! Albert